Mixed Valid_1 Breach Report: 2,350 Accounts Leaked in Stealer Log

HEROIC analysts tracked the Mixed Valid_1 file circulating on Telegram in February 2025. The dataset exposed 2,350 verified credential records, including email addresses, plaintext passwords, and URLs captured from devices compromised by stealer malware.

Validated Credential Files Are Weaponized Immediately

A valid tag on a credential file means each record has been tested against its target service. Attackers purchasing this Mixed Valid_1 data have confirmed working logins ready to exploit for account takeover, unauthorized access, and financial fraud.

What the Mixed Valid_1 Leak Exposed

• Email Addresses
• Plaintext Passwords
• URLs (endpoint context)

How Verified Credentials Lead to Identity Theft

Working email credentials give attackers control over password reset flows for banks, e-commerce platforms, and social media. Within hours of a valid credential file circulating, victims can find their accounts locked, purchases made, or sensitive data extracted.

How Stealer Log Breaches Work

Stealer logs are produced by malware silently installed on victims' computers. The malware captures usernames, passwords, and browser session data before sending it to criminals, who then package and sell the data on Telegram channels and dark web markets.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches over 400 billion+ leaked records to tell you if your email was part of this or any other stealer log dump. Check your exposure now at no cost.